Bug(maybe) found for GT-AXE11000_386.7_2 firmware

[fsrm]

I have install GT-AXE11000_386.7_2 merlin firmware on my GT-AXE11000 and found that my device connected to 5G wifi has been fored to chosing 20Mhz stream which has been tested on 3 different device, max speed is 286Mbps, any setting change is not working.
After i install the old version firmware(GT-AXE11000_386.5_0), everything is fine and my device can stream on 80Mhz and the max speed is normal(1200Mbps).
Please test GT-AXE11000_386.7_2 merlin firmware whether this bug exits, thanks.